n | a(n) |
---|---|
2 | 1 |
3 | 8 |
4 | 38 |
5 | 202 |
6 | 873 |
7 | 4228 |
8 | 17982 |
9 | 83986 |
10 | 356720 |
11 | 1636710 |
12 | 6967782 |
13 | 31651902 |
14 | 135174069 |
15 | 610281684 |
16 | 2614576678 |
17 | 11756749378 |
18 | 50516489196 |
19 | 226522941742 |
20 | 975898078974 |
21 | 4367362698334 |
22 | 18859586883256 |
23 | 84276937119086 |
24 | 364693906704798 |
[1,8,38,202,873,4228,17982,83986,356720,1636710, 6967782,31651902,135174069,610281684,2614576678, 11756749378,50516489196,226522941742,975898078974, 4367362698334,18859586883256,84276937119086, 364693906704798] |